Quarterly report pursuant to Section 13 or 15(d)

SEGMENT INFORMATION - Operating Revenue and Operating Income by Operating Segment (Details)

v3.22.2.2
SEGMENT INFORMATION - Operating Revenue and Operating Income by Operating Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Segment Reporting Information [Line Items]        
Operating revenue $ 1,244.3 $ 1,222.9 $ 3,924.3 $ 3,670.7
Operating income 242.9 273.2 880.0 885.8
General Corporate Expense        
Segment Reporting Information [Line Items]        
Operating income (112.6) (141.0) (367.9) (414.7)
Workforce Solutions        
Segment Reporting Information [Line Items]        
Operating revenue 558.9 514.6 1,817.1 1,503.8
Workforce Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating income 231.0 254.0 820.6 785.5
U.S. Information Solutions        
Segment Reporting Information [Line Items]        
Operating revenue 397.4 437.7 1,251.8 1,352.8
U.S. Information Solutions | Operating Segments        
Segment Reporting Information [Line Items]        
Operating income 82.0 127.7 315.4 419.3
International        
Segment Reporting Information [Line Items]        
Operating revenue 288.0 270.6 855.4 814.1
International | Operating Segments        
Segment Reporting Information [Line Items]        
Operating income $ 42.5 $ 32.5 $ 111.9 $ 95.7